22KW 6-Pole Three-Phase Induction Motor Introduction

This 22KW heavy-duty three-phase induction motor is a high-torque industrial drive core, featuring a 6-pole configuration and a rated speed of 900 RPM—closely approaching the 1000 RPM synchronous speed under 50Hz three-phase alternating current (AC) power supply. Its operation is based on the core principle of electromagnetic induction: when three-phase AC is injected into the stator windings, a uniform rotating magnetic field (RMF) is generated, with rotational speed determined by power frequency and pole pair count. The RMF cuts the rotor conductors to induce electromotive force (EMF) and eddy currents, and the interaction between these induced currents and the RMF produces strong electromagnetic torque, driving the rotor to rotate asynchronously with a low slip ratio (2.5%-4% at rated load), ensuring stable power output for heavy-load equipment.

Structurally engineered for heavy-duty scenarios, the motor adopts a thickened cast-iron frame with IP55 protection class, providing superior mechanical rigidity, dustproof, and waterproof performance to withstand harsh industrial environments such as high-dust workshops and high-humidity processing plants. The stator is equipped with high-purity oxygen-free copper windings encapsulated in Class F insulation material, boasting a thermal endurance temperature of 155℃, which minimizes copper loss and prevents insulation breakdown under long-term heavy-load operation. The 6-pole rotor uses a die-cast aluminum squirrel-cage structure reinforced with steel bars, ensuring high mechanical strength and impact resistance, paired with precision sealed deep-groove ball bearings lubricated by high-temperature lithium-based grease to reduce frictional loss and extend service life.

Key performance parameters meet heavy-industry demands: rated voltage 380V (50Hz), rated current approximately 42A, rated power factor ≥0.88, starting torque 1.8 times the rated torque for reliable startup under heavy loads, and maximum torque 2.3 times the rated torque to cope with sudden load fluctuations. Compliant with IE3 high-efficiency standards, it minimizes energy consumption, with noise emission controlled at ≤78dB at 1m. Widely applied in heavy machinery, large-scale conveyors, industrial ventilation systems, and mining auxiliary equipment, it supports horizontal and vertical mounting. Regular insulation resistance testing (≥2MΩ at 500V DC) and bearing maintenance ensure stable operation, making it a durable and cost-effective heavy-duty drive solution.